The fibers, 250 μm, arepositioned in a loose tube made of a high modulus plastic. The tubes are filledwith a water resistant filling compound. The tube is wrapped with a layer ofPSP longitudinally. Between the PSP and the loose tube water-blocking materialis applied to keep the cable compact and watertight. Tow parallel steel wiresare placed at the two sides of the steel tape. Then, the cable is completedwith a PE sheath.

1.2Cable Characteristics

lGood mechanical and temperature performance

lHigh strength loose tube that is hydrolysis resistant.

lSpecial tube filling compound ensure a critical protection of fiber.

lCrush resistance and flexibility.

lPSP enhancing moisture-proof

lTow parallel steel wires ensure tensile strength

lSmall diameter, light weight and easily installation

1.3 Cable Application

lLong-distance communication.

lIt's suitable for duct, especially for the placeswith high requirement for moisture-proof.